Furnace-stoker.



E. F. KRELL.

FURNAGB STOKER.

APPLICATION FILED 111111.11, 1911.

Patented 151510.23, 1913.

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E. F. KRELL.

FUHNAGE STOKER.

APPLIQAMONP11,B1 .11A11 11,1911A 3 SHEETS--SHEET 3.

WLM/142mm 55 gageinent at their Fries.

'EMM i, KIF/ELE, QF BETROIT, MICHIGAN.

FURNACE-STOKER.

To aZZ 'whom z' may concer-n.

Be it known that', EMIL F. Kanu., a citizen of the United States 'of America, rey siding at Detroit, in the count-y of Wayne 5 und State of Michigan, have invented cerf tain new and useful Improvements in ljurinace-Stclters, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to improvements in furnaces and more particularly to automatic stoking furnaces in which the coal is niechanicaliy 'led :trein a hopper directly to .the

grate bars. l

The object of the invnntion is to provide n simple and cheap construction in which va very compact arrangement of parte is se cared und which is very eiiicient in its operation, giving n positive even feed which ma y 20- be regulated at will and which may be oper-A ated by a minimum of power, the'arrangement being such that the feeding of the coal is greatly assisted by gravity.

` A further object ofthe invention is to so construct the -ieedng mechanism that a greater amount oft coal will be fed in at one end of the furnace than at the other,

and to provide certain other new and zuse ful features in the construction and arrange 80 ment of parts, all as hereinafter more fully described, reference being had to thel accompanying drawings in which, X I

tigure 1 is u4 transverse vertical section through a pair of furnaces embodying the invention; Fig. 2 is an enlarged longitudinal section through one o' the magazines, sub# stantially upon the line ca -a' ot Fig. 3; Fig. 3 is a transverse vertical'section of Fig. 2 on the line y--i Fig. 4e is an end view ot 4G the oscillatory leed bnr detached; F ig. 5

is a. plan view of the same; and Fig. G is an elevation of a casting forming the end of the magazine.

As shown in the drawings 1, l are the e5 side or division walls of the furnace, 2 the life chamber and 3 the vash pit located respectively above and below the cppositely 'and'upwardly .inclined gra-te bars i which. are supported at their lower ends 'upon a grate bearer 5 located above thx ash pit.

rJhe upper ends oi' the grate bars rest against supporting bars 6' secured to channel bars 7. These channel bars are supported with their channel sides uppermost by their en brackets on the furnace front' through open Sipeoication of Letters Patent.

Application led March 11, 1911.

forward ends with Patented Dec. 23, 17913. serial no. 613,679.

ings in the front wall 8 .of the furnace and at their rear ends by their engagement with suitable pockets '9 provided to receive them in end supporting frames l0. These channel bars thus form horizontal nir passages, the tops of which passages are formed by coking plates 11 which are supported at an inclination substantially the same as the inolination oi the grate bars, by a series of open brackets 12 secured within cach channolbar and by their engagement along their lower edges with the inner flanges of the channel bars. Along its upper edge each colring plate engages a suitable flange upon n bearing member or casting 13 to which it is secured by bolts 1li, said bolts also passing through flanges on the' brackets 12. These bearing members 13 are supported intermediate their ends by the brackets 12 and at their front ends by the front wall 8 of the furnace. The rear ends of the bearing members are supported by suitable flanges on members or castings 15, which form the rear end walls of fuel magazines 16 located directly above the coking plates with their outer walls 1'? in the vc tical plane of the side walls l of the furnace. Each of the castings 15 is formed with m air chamber 18 opening at its lower end into the pocketJ 9 to receive air from the air channel formed by the channel bar 7, which channel opens through the front plate 19 of the furnace and is covered by a hood 20 thereon. The upper end of each chamber opens into the space between the inner arch 21 and an outer arch 22, which'ma'rches are supported by an arch plate 23. forming they inner side ot' the adjacent magazine 16.

Each arch platel comprises a wall `2i which is inclined inwardly ofr the magazine 16 toward its lower edge to narrow the opening or throat of thc magazine and an outwardly inclined ledge E25 is formed along the lower edge of the wall for supporting an arch seat member S26 which is formed with an inwardly extending inclined wall 2"( 'having a series of upwardly extending` ribs 28 together forming a skew seat for the inner arch 21. .A laterally extending portion or shelf 29 on the wal-124 forms a skew seat for the outer arch 22. The arch seat member Q6 is formed with an upwardly extending wall 30 which is bolted valong its upper edge to the inner edge of the upper arch seat 29 to secure-the member-in piace and said wall, is provided with am of the inner arch, i e arch e 26 is held in place inhiealso bye iib 0n e, suitable groove l The inward ineiinaion of wei; c arch plate gives veryigid 4eenez. inn and the lower aicli seai; may acnableuas shown, Without ineei'ieiiy aie ereasing'he eti-engin of the the Weigli ni' elle inner' aen the arch sea?, member The ledge and 'elle lie lowei ae? seai ein l tendingI parallel above the Coking l @lined chute ispliei'ge liroz of il' into which lie coal e edla'iory feed znoined. inr proviile tlieefoz' each nearing 13. Each of hee feed bains eempris series of sections 35 eeen iie'vi g eircnzn' hui@ poi'tion 36 'ozineci with an axial enening to receive shaft 37 which ie resin lai' in' cross section glireugien'. its le;

fits Within Openings ehe eeveial eeetionswiiieli are i' en. The eeieallseeions are mrnefl 4with a Segmentai pertion 38 een eee; fio

the hub igoien by n Sutabie which ferme one side the ee Curved 'ffice plaie fle() is Secured by e bels peipheal faces the egg-maiis l 0i die oiming the bei" and tiene i bar are ied ioge-liei' ee their segnienai por'iens., This plaie oiynecl Wim oetlied edge il 'poiee Ward edge' of une sevizi? it ""eoves ni embes .di n l erniii any dir 0i' powile'efi coal Work inte 'die nearing 'ie l o f. n, .i A L., Lne sfegineliti er eed bai is tapered lenga.

Gf i i through@ t its length increasing in manieter owafcl the rear end ci? Lne "nari, eline si greater quantity ef wel Win la Cement is nnnd very .ore rapidly consume, i

0i ehe Uien unen their imwe i lien me ieee nar in Linnea w formed forcee l e "ce ever Elie eoking -o forwai posiien, rnde across 'die thi-oat e' 0i lie coal GSi fowenii edge werd tlieiengl@ im foinefl by lie mei,

inwardly inclined lower enti i e areli plaie and t-.e ledge 25, ine inezisu'efl quenti'eies of coal opemion insured.

lie iznrow the feed ber, Gf eef-il toriliegiate here i iegnlaterlq end by ineliningn elle eoliite ai: :in ngie co'responiiing 4;1 ntion ef elle gtae here, Vthe W A contained in the hopper .feeding 0f lie'sinie'neoss il and insnies en even distiibi .fie ears preventing banning 0i"- sin ei the @nel on the'nppei' pari of m.

slmff; 317. and the sbmctnre may be Very quickly enely assembled. The wrangeinene oscillatory feed here and inelineii ceiling plates .leading to tlie uppei encis the grate bars, gives a Substantially een einuoue feed as the Weivli 0i' the c oa Witi in the hopper is applied to the column o?? fuel peeing ove' the cokingplete during id the ofinutien of l'izue 'spoils on ene forming the retugn or backward oscillation of the .inoiining the lower end he arch nieto inward to in'eet the path the eed har, the or Mnl width oli the iinrnnceis lessened.' 'When two or more inmeees are sie ed eide by ide as shown in l with e.. ooininon side Wall l, the kenners at; the adjacent, sides of the two furnaces are brought side oy side, end es the feed loe-r is located with its airis in the plane o1? the Vwell .L ai single feed har may he used to feed the 'l fr ghe two hoppers by making eine ,'nennl portion Il@ of seid. her oi greater Width and providing e. double web eonnectf ingr it to the huh port-ion so tliet'wo sid-ee of the her are eiile. This arrange-- ment of parte greatly eheapene the construction and the over-all Width oli the henk of furnaces is greatly lessened.

l. The eoinhinetionnf n pair of furnaces having e. eonnnon dividing; willil mager-irren, one for each furnace haring open discharge throats entlieir lower ende end located side hy le with their adjacent eide Walls in the .fertienl plane of the dividing Woll, and an osoiilntery nieinher enpported with ite` exis of rotation in thevertioel plone ei! Seid dividing wall and formed with n huh portion, :in oner segmental portion adapted to lbe turned across the. discharge throat of either ningezine'to close the seine, and redini Wehe oonneetingsnid linie and segmental normen to poen the material down Athe structure or the character dethe combination oi an inclined grate, magazine having n discharge throat. entending along the upper end of said gratte, and en oscillatory i'e-ed'memher Within seid c7extendii'ig the entire length thereof and adapted to project across the throat when turned, said member being; of varying; diameter throughout its length and supported with its end of smallest diameter at the forward end of the grate to feed a greater amount or Jnel to the rear portion of said grate over which portion ;;ll ot' theliroducts of coinhuetion pese than to the front. portion t-lnereoiz Where the fuel is mnguned lese rapidly.

3. line Structure oi the character de- 'srcribeda the combination or' a magazine having,l dieehargo throatnt its lower end, :i hearing member haring an open hearing extending along the inaganine, nn os-tillntory feed niernher 'supported in seid open heer-- ing beneath one side of seid magazine :and

'to he iifted 'from seid inem-ing and remove ereliy from beneath seid suie of "nee, and ineens Lier detnohebly.

holding said 'feed niernoer inxit-s hearing sind. oscillating the seine.

in n structure or' the eherecter `described, the combination ol n magazine have discharge throat uit. its lower end, e. leed member supported in the plane of the of the ningozi; i he turned across said throat, und .feed materiel therefrom, seid feed member Comprising a series of segmental eectione and ineens connecting Said seotions to canse the eine to turn together, and an open bearing' to support said sections and permit the internlrernovel of any one thereof through seid side of the nn-xgnzine.

ln n' .Structure of the character described, the combination of n magazine having dieelnirge throat :il its lower end, n. hearing; member extending along one side of the magazine adjacent to the throat and hei/'ing an open lienrinpg, n feed member oomprising a Series oil sections each formed with n heb portion engaging the open hearing and an upwardly extending segmental portion movable aero-es the throat of the magro zine to close the seme and connected to the hui) portion oy e web forming one side of the member to engage and 'feed material from the throat., and means Connecting the sections to turn together 6. In structure of the character leecribed, the combination ot' n iimgaziiie hevported adjacent to said throat comprising n Series of section-s enel) formed with :1 segmental portion adapted to close the throat when Said member is turned and facing plete Secured to the peripheries of said segmental portions and eonneeting said sections to turn together.

'i'. .in a Structure of the character described, e coal magazine, one side oiE which .is forn'led by an arch plate comprising r. Wall inclined inwardly of the magazine toward its lower edge and provided with n laterally extending portion on the wall near thenpper end theeof forming a skew sent for an outer arch7 and an arch sent member having :1n upwardly extending plate formed With openings and tletaohnbly secured to the outer Tlllfitneees:f A

@wie ,-4 enne, Anne i". Rennen.

ing' a discharge throat n feed member supedge of the laterally extending arch seat 

